HydroBASINS lev08 watershed · #1081241520
Bassin de Nyengwe
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 10 administrative regions across 3 countries : Bururi, Fizi, Lake Tanganyika, Makamba, Nyanza-Lac +3
Sub-basin area
2 207,1km²
Upstream area
24 456,9km²
Discharge
141,06m³/s
Mean elev.
975m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Murembwe1067 km²
- Bassin · #10812300802 km²
10 dept-equivalent regions (GADM L2)
- 1004.3 km²45.7% of basin
- Lake TanganyikaMakamba · Burundi391.8 km²17.8% of basin
- 221.3 km²10.1% of basin
- Lake TanganyikaBururi · Burundi196.0 km²8.9% of basin
- RumongeBururi · Burundi103.9 km²4.7% of basin
- 98.9 km²4.5% of basin
- 83.7 km²3.8% of basin
- Nyanza-LacMakamba · Burundi49.4 km²2.2% of basin
2 moreFull L2 list
- Lake Tanganyika45.1 km² · 2.1%
- Makamba2.8 km² · 0.1%
2 intersecting protected areas
Vyanda
IUCN IbNature reserve
44.68 km² overlap
Kigwena Forest
IUCN IbNature reserve
4.27 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 095 distinct species · 3 115 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Nyengwe : 15 espèces reliées par 17 interactions GloBI sur 4 types (connectance 8.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
22,5°C
Annual rain
1 192mm
Moisture idx (CMI)
-0,24
Runoff
188mm/an
PET
1 571mm
AET
985mm
Mean slope
4,4°
Water table
174cm
Forest
12%
Crops
6%
Urban
5%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)